Paper making



Jul 10, 1928.

R. v. WE LDON PAPER MAKING T? m m g m Jul w, 1928.

' 1,676,305 R. V. WELDON PAPER MAKING Filed June 10, 1927 2 Sheets-Sheet2 Patented July 10, 1928.

Boy vxccronwnrnon, or mnmnocxn'r, MAINE, Assmnoa 'ro GREAT ivon'rnemvPAPER COMPANY, OI MILLINQGKET,

,J'MAINE, A GQRPQBATIQN OF MAINE.

rarer. MAKING. 9

Application filed June 10, 1927. sem n; 97,955.

invention. relates to paper making strip 16 thereof. Above thisportionof the v machines and especially to an apparatus and a method oftran ferringthe mov ng paper sheetandparticularly the lead strip thereofQ from the last press into the drier and for passing it automaticallyabout the drying rolls of the drier.

' The driers of some paper machinesare provided with a pair of bands orropes,

known as Sheahan ropes, which extend be-' tween and around the dryingrolls of the drier for the purpose of gripping thelead strip andcarrying it automatically the drier and around the rolls t-heeof.

This invention is particularly desirable 1n machines in which the paperis passed throu h the last press reversed and may be regar ed when soused as an improvement on the Pope'lateutNo. 1,338,094, dated April 27,

the paper by air and uses air currents to carry it to the driersbut doesnot indicate any automatic means totransfer the paper to the bite of theSheahan ropes. TllIS may be done by :hand on slow running-machines butan automatic device hasobvious' advan-' tages. e It is an object'of thisinvention to provide an ap exams and a method fo'r automat cal- 1y.gulding the lead'strip from the last press into the bite between saidropes sothat it through the will be carried automatic-all? r performingdrier without the necessity the operation manually. 1

85 A further object is generally to improve the construction andoperation of paperm'ak ing machines. Fig. 1 is a diagrammatic sideelevatlonof the construction of a paper'inaking machine embodying this.invention at the end of the;

last press and at the beginning of the drier. Fig. 2 is a detail viewtaken along line 2-2ofFig.l.. 1 Fig. '3 is a'plan view of the showing'of Fig.2;

Fig. dis a detail view illustratingthe mah-v nerfinavhi'ch the leadstrip 'ishe1d' between the carrier ropes.

Fig 5 is a plan view of the air-blast piping at'the press taken. alongline 5-5 of Fig,

- As here shown,'- the pjress roll felt 10 of er r passing.

65 carry ng upon'it'thepap'er web ora lead served that the paper isreversed with relathrough 1920. The-Pope patent reverses" paper web istransferred from the press roll I making machine is represented as fromian intermediate set ofpressrolls112, and 12 "around a guide roll 14 andupper web is transferred from the press roll feltlO to the press rollfelt 18 by passing it over the uide rolls'22 and :24 ata point ustbefore elt 18 passesbetween the press rolls 20 and 20. In this way, willbe obtion to the press rollfelts, the surface of theaper sheet incontact with the press .1'oll elt- 10 beingiuppermost while the surfacenot 1n contact withthe press roll 'feltlO is ifmlttlelrgieath and incontact with the press roll The moving web of paper then passes incontact with the upper press roll '20 and is removed therefrom byairblasts and is gu ded over a roller 26 andthence to the drier, where1t passes first'over' the baby q drier 28 and thence in succession aboutand between the large/drying rolls -30. vThe felt 10 about the rollers22 andv24 and into 30- the bite ofthe, press rolls 20 and 20fby suita lb 'pparatussuch as shown-"in the I 1' Charles E. Pope Patent No.-l,338,094-,. dated ,Aprll 27., 1920. The high pressure air is suppliedtov the air. blast apparatus-from a 35 pipe '32 andls reduced to alowerpressure In the apparatus by afpressure regulator iof any suitableconstruction, which. pressure} regulator isvarran'ged' tomaintainthejpresssure of air at the air blasts-constant regard-"19 lessof the number of air blastsin operation Uniformity of airblastpressureis desirable;

T t l Satisfactory p 0 1 under all, conditions.

The lead stripld is detached" the upperpress' roll 20 by meanszpfopposed air blasts'disoharged fromnozzles 36 connected with the'p1pe38and thel ad stripjis guided ontojthe roll 26 by .said bl stsassisted bythe guide ,.p1ate=40 and .air Iblastepassing be tween the weband the guideplate from suit-.

able nozzles 42..The lead strip is guided over the space between theroll 26 and the baby 'drier'28 by suitable upwardly inclined air blasts'issuingfrom aypipe 43: disposed in 'front of the; roll -26. Thearrangement of the air blasts isabout as shownin the Pope patent abovereferred to. .-A- longitudinal y extended guide plate 44 is disposedabove the babydrier 28 at-one end thereof and. ex- 1 1 tends to a pointabout midway between the press rolls and the drier and is adapted toguide the lead strip downwardly and onto the roll 28. The drier isprovided with rope carriers for the lead strip and the paper webarranged about as shown in the William Sheahan Reissue Patent No.13,925, dated June 8, 1915, for engaging the margin of the lead strip orpaper web and carrying it automatically through the drier. The drierrolls are each formed with a peripheral groove 45 therein at one end inwhich a pair of endless ropes 46 and 48 are received side by side. Therope 46 passes downwardly around sheaves 50 and 52 and thence upwa-rdlyinto the groove 45 of the baby drier and lies in the outer portion ofthe groove. The rope 48 passes downwardly about a sheave 54 and at anangle as shown in Fig. 1 into the inner side of the groove of the babydrier and lies adjacent the other rope 46. Both ropes then travel sideby side be tween and about the successive drying rolls of the drier.

The lead strip is adapted to be directed on top of the rope 46 in thegroove of the baby drier and under the rope 48 as it passes into thegroove so that the margin of the lead strip is caught between the ropesin the manner illustrated in Fig. 4 and is wrapped about the baby drierand is caused to be carriedalong with .the ropes through the driers andabout the drying rolls in succession. A paratus is herein provided forautomatica ly causing the lead strip to pass into the bite or nip of theropes. To this end a horizontal pipe 55 connected with the pipe 38through a valve 56 is disposed beneath and at the rear edge of the guideplate 44 and has a plurality of orifices 58 which direct airblastslongitudinally along the under face of said guide plate to assist incarrying the paper web therealong. Said pipe is provided with one ormore orifices 60 located in the outer end of the-pipe at an angle todirect air blasts diagonally under said guide plate and toward the biteof the ropes so that the paper web is urged laterally toward the ropes.A second pipe 62 is vertically disposed at the inner edge of the guideplate 44 and over the body drier and has a plurality of orifices 64therein which are so disposed that they direct blasts-of air 66diagonally downward over the baby drier and towards the bite of theropes and provide. in effect, a diagonally moving curtain of air'whichengages the lead strip and causes it positively to assume a positionover the rope 46 and under the rope 48, thus to -be caught by the ropesand to be" carried around the baby drier and thence in succession aroundthe large "rolls 30 of the drier. The air blasts 66 also serve to blowany loose ends that may be carried through the machine out'of the drierand onto the-floor.

After the lead 'st-riphas been passed into the bite of the carrierropes, the sheet can be widened out to full width in the usual mannor.

1 claim:

1. The method of guiding the paper web of a paper making machine intothe carrier ropes of the drying rolls which consists in directing theweb to move toward the ropes and mainly at one side thereof, anddeflecting the web in front of the ropes laterally toward the ropes by ablast of air directed onto the web in front of the ropes at an angle tothe path off-movement thereof and toward the ropes.

2. The method of passing a paper web between the press and drier of apaper making machine and into the bite of the carrier ropes of the drierwhich consists in causing the paper web to move across the gap be-'tween the press and the first drying roll by its momentum, supportingthe web in its passage by blasts of air directed along the path ofmovement of the web, and deflecting the web in front of the ropeslaterally toward the ropes by directing a blast of air onto the web atthe first drier at an angle to the path of movement of the web andtoward the bite of the carrier ropes.

3. The method of guiding a paper web to pass into the bite ofcarrierelements adapted to engage a marginal edge of the web, which conslsts inmoving the web in a direction toward and mainly to one side of thecarrier elements, and deflecting the web laterally toward the carrierelements by directing a blast of air onto the web in front of thecarrier elements and at an angle to the direction of movement of the weband toward the carrier elements.

4. The method of guiding a paper web into the bite of carrier elementsadapted to engage the marginal edge of the web which consists in causingthe web to move toward said elements and mainly at oneside thereof anddeflecting the web laterally by blasts of air impinging thereagalnst atan angle to the path of movement of the web and in a direction to causeit to enter the carrier elements.

5. The method of passing the paper web from the press into the drier ofa paper llltlli ing machine which consists in detaching the paper webfrom the press felt and guiding the paper web to pass into the bite ofwebreversing press rolls by blasts of air directed onto the webtransversely of the path of movement thereof at the felt and thencealong-the path of movement thereof into the press rolls, causing thepaper web to more by itsmomentum across the gap between the press rollsand the first drying roll of the drier, guiding and supporting the paperweb during such passage by blasts of air directed mainly longitudinallyof the path lUll blast of air against the web. ahead. of the carrierelements and at an angleto the path,

of movement of the web and toward the carrler elements, whereby todeflect the moving web laterally andintothe bite of the carrierelements.

6. In a paperma'king machine theeombinatlon with a'drler having a pairof carrier elements extended around and between the drying rolls of'thedrier to carry the paper web through the drier, :means for automaticallyintroducing the-paper web between said carrier elements comprisingapparatus for moving the paper web toward the first drying roll andmainly at the side of the carrier element's,'and apparatus forproducing-a jet of air which is directed onto the paper web transverselyof'the path of movement of the paper web and toward the carrier elementsto cause the web to be deflected laterally toward and enter between'saidcarrier elements.

7. In a paper making machine, the combination with a .drier having apair of conjointly-operating carrier elements extended about andbetweenthe drying rolls to engage the margin of and carry the paper webthrough the drier, of apparatus for guiding the paper web to pass to thefirst drying roll of the drier, of means for automatically introducingthe paper web between said carrier elements comprising apparatus formoving the paper web toward the first drying roll and mainly at the sideof the carrier elements. and apparatus for producing a jet of air whichis directed transversely of the path of movement of the paper web andtoward the carrier elements to impinge against the paper web and causeit to be deflected laterally and enter between said carrier elements.

8. In a paper making machine, the combination 'of a drier having a pairof conjointly operating carrier elements extended about and between thedrying rolls to engage and carry the paper web through the drier,apparatus for guiding the paper web to pass to the first drying roll ofthe drier, and apparatus erally at its pass to the first drying rollinto said carrier elements.

9. In a papermaking machine, the combination with a drier having a-pairof conjointly-operating carrier elements extended about and between the"drying rolls to engage and carry the paper web through the drier, ofapparatus for guiding the plper web to pass to the first drying roll ofthe drier. and apparatus for deflecting the paper web laterally intosaid carrier elements including a pipe disposed above the first dryingroll on the side of the paper web opposite-the 'ratus -for deflectingfor deflecting the paper web latcarrierelementshaving provision fordirectinga, blast of air towardthe carrier. elements" and transverselyot the path of movement of thepaperweb. w, I

10. In a paper makingmachine,the combination with a press and adrierhaving a'pair of conjointlyroperable carrier elements ex the drier, ofmeans to;.cau'se the paper web to pass. from the press tothe drier, andappaelements. a

11. In; a paper melting machine, the i: com: bination with a press and adrier having'a pair ofconjointly-operable carrier elements extendedabout and between thedrymg rolls of the drier, of'means' to cause thepaper web to pass from the press to the drier, and apparatus fordeflecting the paper web laterally of its path of movement at said passmovement of the web therebetween and above the first drying roll, meansto direct a blast of air under and along the length of and in contactwith said plate, and means disposed abovesaid first drying roll and atthe side of said guide plate-opposite said carrier elements arranged todirect a blast of air forwardly toward said carrier elements anddiagonally of the path of movement of said web and against the web,whereby to deflect it laterally and into engagement with said carrierelements.

12. In a paper making machine, the combination with the press and thedrier having a pair of conjointly-operable carrier elements extendedabout and between the drying rolls at one end thereof, of means forguiding the web into engagement with said carrier elements comprisingair blasts to support the paper web in its pass between the press andthe drier, a guide plate disposed above the pass of the Web and abovethe first drying roll, means to direct blasts of air under and incontact with said guide plate in. a direction longitudinally thereof andover the paper web, and means disposed above the first drying roll andon the 1 side of said gulde plate opposite said carrier the paper weband deflect it laterally into engagement with the carrier elements.

13. In a paper making machine-the combination with a pair of spaced websupporting rolls. of means for automatically transferring the webbetween said rolls, comprising means for directing a blast of air thepaper web laterally .of its path of movement at.sa idpass and be{ tweenand-into engagement with said carrier;

tended about and between the drying rolls or;

against the paper web in the direction of movement thereof, and othermeans for directing a blast of air against the paper web at an angle tothe path of movement thereof.

14. In a paper making machine, the combination of drying cylinders, twopairs of press rolls and their respective felts arranged to reverse thedirection-0f movement of the paper in passing from one to the other ofsaid pairs of rolls, and rolls for guiding the paper as it passes fromone of said felts to the other and from the latter felt to the dryingcylinders, means for automatically transferring a lead strip from thefirst felt through the second pair of press rolls and from the latterpair of rolls to the.

drying cylinders, said drying cylinders having a pair ofconjointly-operable web carrying elements passed about and between saidcylinders at one end thereof, and means for passing the web intoengagement with said carrier elements including apparatus to di- 'rect ablast of air against the paper web in a direction transversely of itspath of movement between the press and the drying cylawson inders andtoward said carrier elements to deflect and cause it to enter theengagement ofsaid carrier elements.

15. In a paper making machine, the combination of a series of dryingrolls, a rope wrapped about and extending between said drying rolls atone end thereof, a second'rope passed onto the first drying roll of theseries at an angle with and in position to lie beside the first rope andthence about and between the drying rolls with said first rope, andmeans to guide a lead strip of the paper web to pass over the first ropeand under the second rope at the first drying roll comprising apparatusfor guiding the lead strip to pass to the first roll mainly at one sideof the ropes, and means to direct a blast of air forwardly toward saidropes and at an angle to the direction of movement of and against thelead strip, whereby to deflect itv laterally into engagement with saidropes.

In testimony whereof, I have signed my name to this specification.

ROY VICTOR WELDON.'

